~50B in the account at current valuation, if Satoshi starts liquidating the value goes down dramatically; if it gets out that it isn't actually Satoshi acting, the value goes down even more (OMG if the creator of bitcoin can get hacked I can get hacked, this is a terrible investment, I'm out).
I don't think it'd be possible to recoup the investment, but if you have a strong argument otherwise I'm sure some billionaire/nation-state investors would love to hear it.